The CBS broadcast turned to Swift’s suite as Jim Nantz read a promo for the Grammys. Swift appeared to catch a glimpse of the cameras’ attention on her while she looked up at a TV screen.

GARBSEN, Germany—Miniaturized camera technology pioneer Proton Camera Innovations will unveil the Proton 4K, which it has dubbed as the world’s smallest 4K broadcast-quality camera, during the Hamburg ...